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Method and device for processing received signals of wireless communication system terminals

A wireless communication system and terminal receiving technology, applied in transmission systems, digital transmission systems, modulated carrier systems, etc., can solve the problem of ADC quantization noise affecting the quality of 16QAM signal reception, and achieve the effect of ensuring the quality of reception

Active Publication Date: 2012-11-21
LEADCORE TECH
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

If the delta in the original design is not large enough, the quantization noise of the ADC will affect the receiving quality of the 16QAM signal

Method used

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  • Method and device for processing received signals of wireless communication system terminals
  • Method and device for processing received signals of wireless communication system terminals
  • Method and device for processing received signals of wireless communication system terminals

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] image 3 It shows the flow of the first embodiment of the method for processing signals received by the terminal of the wireless communication system of the present invention, that is, the embodiment for TD-SCDMA HSDPA. See image 3 , the following is a detailed description of each step in the method.

[0045] Step S100: Obtain the modulation mode of the HS-PDSCH signal by analyzing the information of the HS-SCCH in advance. In the TD-SCDMA wireless communication system, the modulation mode of the HS-PDSCH signal can be known at least three time slots in advance. This period of time can be used for subsequent resetting of the receiving channel.

[0046] Step S101: Judging whether the modulation mode of the acquired HS-PDSCH signal is 16QAM, if the modulation mode is 16QAM, proceed to step S102, and if the modulation mode is not 16QAM, proceed...

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Abstract

The invention discloses a method and a device for processing received signals of wireless communication system terminals, which ensures the HSDPA signal-receiving quality of the terminals. The invention adopts a technical scheme that the method comprises: acquiring a modulation mode of HS-PDSCH signals in advance by resolving HS-SCCH information; utilizing the time left by acquiring the modulation mode of the HS-PDSCH signals in advance to reset a receiving channel according to the modulation mode, control the ratio of quantization noise to noise power and reduce deterioration of the quantization noise to the demodulation of signal-to-noise ratio; and receiving HS-PDSCH information through the reset receiving channel. This invention is applied in the field of mobile communication.

Description

technical field [0001] The present invention relates to a method and device for processing signals received by a terminal of downlink data, in particular to a method and device for processing signals received by a terminal of HSDPA or HSPA+ in a TD-SCDMA system. Background technique [0002] In order to increase the downlink data rate, HSDPA (High Speed ​​Downlink Access, High Speed ​​Downlink Access) technology is introduced into the TD-SCDMA system. In HSDPA, the downlink data can adopt the 16QAM modulation mode, while the common TD-SCDMA (R4 and its previous version) adopts the QPSK modulation mode. Compared with QPSK modulated signals, 16QAM modulated signals require higher demodulation signal-to-noise ratio requirements. Therefore, the original receiving and processing methods for TD-SCDMA QPSK signals may have problems when receiving HSDPA 16QAM signals. [0003] Specifically, see first figure 1 , is the control flow of the AGC in the existing TD-SCDMA system. figur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/00H04B1/10
CPCY02B60/50
Inventor 樊锋王明果
Owner LEADCORE TECH
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